syzbot

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data & WORK_STRUCT_PWQ
WARNING: kernel/workqueue.c:4305 at __flush_work+0xb75/0xcb0 kernel/workqueue.c:4305, CPU#1: kworker/1:7/5974
Modules linked in:
CPU: 1 UID: 0 PID: 5974 Comm: kworker/1:7 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:__flush_work+0xb75/0xcb0 kernel/workqueue.c:4305
Code: 01 e8 6f ba 10 00 e9 bf fd ff ff 48 8b 7c 24 18 e8 30 35 98 00 e9 f7 f6 ff ff e8 26 35 98 00 e9 09 fa ff ff e8 ac 31 34 00 90 <0f> 0b 90 e9 38 fc ff ff e8 3e 35 98 00 e9 2d fb ff ff 48 89 df e8
RSP: 0018:ffffc9000698ebc0 EFLAGS: 00010283
RAX: 000000000007db1f RBX: ffff8881000ba005 RCX: ffffc90011c05000
RDX: 0000000000100000 RSI: ffffffff817dca94 RDI: ffff888123113b00
RBP: 0000000000000004 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000004 R11: 1ffff1102349e089 R12: ffffffff817dc3ea
R13: ffff88810006b000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882687c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc371981040 CR3: 000000012bacc000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __cancel_work_sync kernel/workqueue.c:4448 [inline]
 cancel_work_sync+0xd1/0xf0 kernel/workqueue.c:4485
 smsusb_stop_streaming+0xaa/0x210 drivers/media/usb/siano/smsusb.c:183
 smsusb_term_device+0x8f/0x200 drivers/media/usb/siano/smsusb.c:345
 smsusb_init_device+0xb4e/0xbb0 drivers/media/usb/siano/smsusb.c:497
 smsusb_probe+0xd7f/0xe1f drivers/media/usb/siano/smsusb.c:575
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:643 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:721
 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:863
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:893
 __device_attach_driver+0x1df/0x340 drivers/base/dd.c:1021
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1093
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1148
 bus_probe_device+0x64/0x160 drivers/base/bus.c:613
 device_add+0x11d9/0x1950 drivers/base/core.c:3691
 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:643 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:721
 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:863
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:893
 __device_attach_driver+0x1df/0x340 drivers/base/dd.c:1021
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1093
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1148
 bus_probe_device+0x64/0x160 drivers/base/bus.c:613
 device_add+0x11d9/0x1950 drivers/base/core.c:3691
 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x314d/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x19a0 kernel/workqueue.c:3276
 process_scheduled_works kernel/workqueue.c:3359 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3440
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x6c3/0xcb0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>